Table 1 Results of laboratory social attraction experiments.

From: Aggregating behaviour in invasive Caribbean lionfish is driven by habitat complexity

Stimulus Sample size Initial preference Overall preference
Proportion of trials where stimulus zone was entered first p-value Test statistic p-value
Visual 15 0.6 0.6072 NA 0.6072
Olfactory 13 0.62 0.5811 −3.6764 0.00317*
Visual + olfactory 18 0.28 0.09625 −0.35812 0.7247
Artificial model 12 0.67 0.3877 1.2259 0.2458
  1. Initial preference p-values were calculated using binomial tests with a null hypothesis of 0.5. Overall preference p-values were calculated using one-sample t-tests (olfactory, visual + olfactory and artificial model cues) and sign tests (visual cue) with a null hypothesis of 0. * indicates p < 0.05.